988437 divided by 80 
The aim is to understand the frequency of 80 in 988437.

Let's proceed to step 1:
80 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 80

Moving on to step 2:
80 can be fit into 98 1 times, resulting in a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 80 from 98, we get 18.
Bring next digit (8) of the dividend behind the 18 and repeat the process: 188 / 80

Moving on to step 3:
If we divide 188 by 80, we get 2 and a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtract 160 from 188 to get 28.
Fetch the next digit (4) from the dividend, attach it to 28 and continue: 284 / 80

Step 4:
If we divide 284 by 80, we get 3 and a remainder of 44.
The number 3 becomes the next digit in our result. 
Result so far: 123.0
Subtract 240 from 284 to get 44.
Include the next digit (3) from the dividend after 44, then repeat: 443 / 80

Advancing to step 5:
80 can be fit into 443 5 times, resulting in a remainder of 43.
Put 5 as the next digit of the answer. 
Result so far: 1235.0
The remainder is 43 after subtracting 400 from 443.
Fetch the next digit (7) from the dividend, attach it to 43 and continue: 437 / 80

Advancing to step 6:
If we divide 437 by 80, we get 5 and a remainder of 37.
The number 5 becomes the next digit in our result. 
Result so far: 12355.0
Subtracting 400 from 437 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 7:
If we divide 370 by 80, we get 4 and a remainder of 50.
Use 4 as the next digit of our solution. 
Result so far: 12355.4
If we take 320 away from 370, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 8:
80 goes into 500 6 times with a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 12355.46
If we take 480 away from 500, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
If we divide 200 by 80, we get 2 and a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 12355.462
If we subtract 160 from 200, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
If we divide 400 by 80, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 12355.4625
If we take 400 away from 400, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12355.4625
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 12:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12355.4625
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 12355.4625 and a remainder of 0.0.